Re: [PATCH v2 1/1] dt-bindings: dmaengine: Add MediaTek Command-Queue DMA controller bindings
From: Matthias Brugger <matthias.bgg@gmail.com>
Date: 2019-02-14 09:04:48
Also in:
dmaengine, linux-devicetree, linux-mediatek, lkml
On 14/02/2019 08:54, shun-chih.yu@mediatek.com wrote:
From: Shun-Chih Yu <redacted> Document the devicetree bindings for MediaTek Command-Queue DMA controller which could be found on MT6765 SoC or other similar Mediatek SoCs. Signed-off-by: Shun-Chih Yu <redacted> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Sean Wang <sean.wang@kernel.org> ---
Please don't send cover letters for single patches, just for series. If you want to add some information to a single patch, which should not show up in the commit message (e.g. change log) you can do that below the "---" Regards, Matthias
quoted hunk ↗ jump to hunk
.../devicetree/bindings/dma/mtk-cqdma.txt | 31 ++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/dma/mtk-cqdma.txtdiff --git a/Documentation/devicetree/bindings/dma/mtk-cqdma.txt b/Documentation/devicetree/bindings/dma/mtk-cqdma.txt new file mode 100644 index 0000000..fb12927 --- /dev/null +++ b/Documentation/devicetree/bindings/dma/mtk-cqdma.txt@@ -0,0 +1,31 @@ +MediaTek Command-Queue DMA Controller +================================== + +Required properties: + +- compatible: Must be "mediatek,mt6765-cqdma" for MT6765. +- reg: Should contain the base address and length for each channel. +- interrupts: Should contain references to the interrupts for each channel. +- clocks: Should be the clock specifiers corresponding to the entry in + clock-names property. +- clock-names: Should contain "cqdma" entries. +- dma-channels: The number of DMA channels supported by the controller. +- dma-requests: The number of DMA request supported by the controller. +- #dma-cells: The length of the DMA specifier, must be <1>. This one cell + in dmas property of a client device represents the channel + number. +Example: + + cqdma: dma-controller@10212000 { + compatible = "mediatek,mt6765-cqdma"; + reg = <0 0x10212000 0 0x1000>; + interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_LOW>, + <GIC_SPI 114 IRQ_TYPE_LEVEL_LOW>; + clocks = <&infracfg CLK_IFR_CQ_DMA>; + clock-names = "cqdma"; + dma-channels = <2>; + dma-requests = <32>; + #dma-cells = <1>; + }; + +DMA clients must use the format described in dma/dma.txt file.
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